Integrated Vehicle Heater Plates for Compact Heat Transfer
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Solution Overview
Problem
Existing motor vehicle heaters face challenges with complex manufacturing and assembly processes, large volume, and weight due to the use of corrugated heat radiating fins, and suffer from decreased heat exchange efficiency and durability due to adhesive issues between heat radiating means and rod assemblies.
Innovation Solution
A motor vehicle heater design featuring heat radiating plates with through-holes and a heat source part with a PTC device, where the rod sidewall is extrusion-molded integrally with the heat radiating plates, minimizing the use of adhesives and enhancing mechanical coupling between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If corrugated heat radiating fins are used to increase heat radiating area, then heat radiating performance is improved, but manufacturing and assembling processes become complicated and volume and weight increase
Solution Approach 1:
The patent merges the heat radiating fins with the housing by forming protrusions on the housing that directly serve as heat radiating surfaces. This integration eliminates the need for separate fin components, simplifying both manufacturing and assembly processes while maintaining effective heat radiating area and performance.
2Ease of manufacture
If heat source part and heat radiating means are coupled by adhesive means, then assembly is simplified, but heat exchange efficiency decreases due to clearance or air gap
Solution Approach 1:
The patent merges the heat source part rod with the housing by forming protrusions on the housing that directly receive and secure the PTC device. This direct mechanical integration eliminates gaps and ensures efficient heat transfer from the PTC device to the housing, while still allowing for straightforward assembly.
3Ease of manufacture
If adhesive means are used to couple heat radiating means and rod assembly, then assembly is easier, but adhesion decreases at repetition of thermal load leading to durability issues
Solution Approach 1:
The patent merges the heat radiating fins with the housing through direct formation of protrusions on the housing. This integral structure eliminates adhesive joints that would fail under thermal cycling, ensuring long-term durability and maintaining structural integrity throughout the product lifecycle.
4Area of stationary object
If multiple heat radiating fins are coupled by adhesive means, then heat radiating area is increased, but number of components, weight, and cost increase
Solution Approach 1:
The patent merges multiple heat radiating fins directly into the housing structure as integrated protrusions. This approach provides extensive heat radiating area while reducing the number of separate components to zero for the fin assembly, thereby decreasing overall weight and manufacturing cost.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design results in a compact, easily assembled heater with improved heat exchange performance and durability, reducing the number of components and adhesive usage, while maintaining close adhesion even under thermal load.
Implementation Method 1
an electric heater or an electrical heater has been recently used. As an example, a positive temperature coefficient (PTC) heater electrically directly heating introduced air has been used
Implementation Method 2
a plurality of heat radiating fins 12 coupled to the rod assembly to radiate heat
Implementation Method 3
extrusion-molding at least any one of a rod sidewall and a rod cover integrally with at least any one of the heat radiating plates
Data Source
AI summary
Provided is a heater for a motor vehicle including: a heat source part: a heat source part rod including a rod sidewall and a rod cover in order to receive the heat source part; a first heat radiating plate including a first heat generation region in which one side of the heat source part is disposed and a first air movement region in which at least one or more first through-holes are formed; and a second heat radiating plate including a second heat generation region in which the other side of the heat source part is disposed and a second air movement region in which at least one or more second through-holes are formed. Particularly, the heat source part is disposed between the first and second heat radiating plates, and the rod sidewall is provided integrally with the first heat radiating plate.